Roof Insulation Amount

Add insulation to attic.

Roof insulation amount.

The amount of insulation recommended for your home will vary depending on a number of factors. Recommended insulation levels for retrofitting existing wood framed buildings. The insulation capacity of a 10cm thickness of batts is as same as 10cm of polyurethane foam. Input length width and desired r value of the area to be insulated.

Click the button to calculate the depth in inches and pounds of total insulation required for this job. With a flat roof this issue does not arise but the u value constraint and the amount of insulation needed is just the same. Where you live different climates require different insulation r values. This calculator is to be used as an estimating tool only.

Protect water heaters to extend their longevity and lessen the amount of energy needed to heat your water. The manual of low slope roof systems has a great section explaining the importance of using smaller insulation boards to improve dimensional stability. Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation. Achieving a u value of 0 20w m meaning your roof will be better insulated than your walls will need 120mm thickness of rigid foam or 200mm of mineral wool or natural insulation.

Insulation input length and width of area to be insulated. Compared to the fiberglass batts this insulation is much better. Protect your garage external walls attic and basement initially as these areas are most vulnerable to temperature change especially with all the various types of roof insulation out there. Existing 3 4 inches of insulation.

Find your zone on the map and then use the chart to determine the level of insulation you need to properly insulate your attic walls floors and crawlspaces. Radiant barrier spray metal roof insulation. Financially speaking this spray is a great option especially when you need to renovate your roof after the application.